Motor apparatus for looms.



No. 629,504. Patented July 25, I899. A. B. HERRICK &. W. M. BROCK. MOTORAPPARATUS FOR LUOMS.

(Application filed Aug. 23, 1898.) (No Model.) v 3 $heets-Sheet l.

35 6111 01mm mm THE "mums FEYERS ca, PHOTO-L|THO.. msnmuj'ou, D. 1;.

Patented July 25, I899. A. B. HERRICK & W. M. BROGK.

MOTOR APPARATUS FOR LOUMS.

(Application filed Aug. 23, 1898.) (No Model.) 3 Sheets8heet 2,

QwLtmmo/m N0. 629,504. Patented July 25, I899. A. B. HERBICK &. W. M.BBDCK. MOTOR APPARATUS FOBYLOUMS.

(Application filed Aug. 23, 1898.) (NflMnldelJ r3 I 3 Sheets-Sheet 3.

Mai-Q ,NITED STATES PATENT FicE.

ALBERT B. HERRICK, OF RIDGEWOOD, AND WILLIAM M. BROOK, on PATEBSON, NEWJERSEY.

MOTOR APPARATUS FOR LOOMS.

SPECIFICATION forming part of Letters Patent N 0. 629,504, dated July25, 1899. p I

Application filed August 23, 1898.

To all whom it may concern:

Be it known that we, ALBERT B. HERRICK, residing at Ridgewood, in thecounty of Bergen, and WILLIAM M. BROOK, residing at Paterson, in thecounty of Passaic, State of New Jersey, citizens of the United States,have invented certain new and useful Improvements in Motor Apparatus forLooms, of which the following is a full, clear, and exact specification.

ur invention relates to apparatus for starting and runningloommachinery; and its 0bject is to construct a motor apparatus which shallstart the loom at f ullspeed when started from rest, shall operate thesame smoothly and evenly, and which shall be capable of operating a100111 with a motor of sufficient power to perform the work after astart has been accomplished, but which would under ordinary conditionsbe too weak to start the loom from rest.

- At the present time most of the looms in practical use are operatedeither by steam power or by electric motors of more than the requisitepower to start and operate them belted to the loom-shaft, the motor orsteamengine being kept in constant operation and the loom being startedand stopped by shifting the belts. By such arrangement a great deal ofpower is wasted, the loom operates unevenly, and it is almost impossibleto make an instantaneous stop of the apparatus.

Our inventipn therefore primarily consists of means for starting themotor without load and running it in this condition to the necessaryspeed to accumulate sufficient inertia to overcome the static inertia ofthe loom and means forefiecting a connection of the motor after thisspeed has been attained to the driving-shaft-of the loom.

The invention further comprehends the introduction of a flexibleconnection between the motor and the loom and other features ofadvantage, which will more fully hereinafter appear. I

Byreference to the accompanying drawings, in which certain forms andmodifications of the invention are shown, the accompanying descriptionwill be more fully understood.

In the drawings, Figure 1 is a side View,

Serial No. 689,284. (No model.)

partly in section, illustrating a motor connected with a loom-shaft inaccordance with our invention. Fig. 2 is asectional end View of Fig. 1.Fig 3 is a sectional end view of a modification of the invention. Fig. 4is a side view, partly in section, of the device shown in Fig. 3. Fig. 5is a detail sectional view of the brake-shoe. partly in section, of astill further modification of the device; and Fig. 7 is a sectional endview of Fig. 6. I

Referring more particularly to the drawings, Fig. 6, 1 represents thedriving-shaft of the loom. brake-wheel 2 and a gear-wheel 3. I The motor4, which in this instance is represented as an electric motor of anysuitable construction, is loosely mounted upon shaft 1 and iscounterbalanced by a weight 5. The motor and its counterbalance beingthus free to revolve upon the shaft l,the pinion 6,fixed to thearmature-shaft of the motor,which shaft is mounted in the motor casingor frame,will travel-around gear-wheel 3, thus swinging the motor aroundthe shaft 1. a stop 8 and a brake 9, the two latter preferablycomprising a single bar, pivoted at its middle to the stud and carryingat one end the stop and at the other end the brake, the

lever having a limited range of movement, whereby in one position thestop will be in the path of movement of a log 10 on the motor-casing andthe brake elevated out of said path, as shown in Fig. 7, and in theother positionthe stop will be elevated out-of said path and the brakedepressed and applied to the brake wheel. 2. Suitable, connectionsshould be made between the stop and the brake and the switch controllingthe motor, whereby when the stop is in the path of lug 10 and the brakereleased the motor will start and when the stop is removed and the brakeapplied the power will be cut off. In Fig. 7 I have illustrated one ofthe many ways in which this may be accomplished. In this instance 26represents a handle bywhich the stop and brake are moved simultaneously,the one into and the other out of operative position. Upon the brake-armis carried a connecting bar 27 of conductive material adapted to connecttwo contacts 28 and 29,

Upon a fixed stud 7is mounted Fig. 6 isa side view,

the latter being connected, respectively, by wires 30 and 31 to a sourceof current-supply and to the motor. When the brake-arm carrying theconnecting bar 27 is moved away from the contacts 28 and 29, themotorcircuit will be broken. 32 represents a conductor between the motorand the source of current-supply to complete the circuit.

In the operation of the above-described device, the machine being atrest and the brake applied, the motor will be in the position shown inFig. 7, it being preferably made sufficiently heavier than thecounterbalance to cause it to assume the position shown. The barcarrying stop 8 and brake 9 is moved to release the brake and move stop8 into the path of lug 10. This movement turns on the current for themotor and starts the latter. There is at this time no load upon themotor, and it being counterbalanced the pinion 6, in mesh withgear-wheel 2, will cause the motor to rotate about shaft 1. By the timeit has traveled far enough for the lug 10 to strike the stop 8 it willhave attained the desired speed to operate the loom and will possesssufficient inertia to overcome the static inertia of the loom, and thusstart the same. When lug 1O strikes stop 8, the further travel of themotor about shaft 1 must cease and its inertia will be reflected upongear-wheel 2 through pinion 6, causing the gear-wheel and the loom-shaftto commence rotation at full speed. When the stop 8 is removed from thepath of the lug 10 on the motor-case and simultaneously the brake isapplied and current turned off the motor, the inertia of the motor willbe spent in simply causing the latter to travel about the shaft 1 andwill not in any way interfere with the braking of the loom by the brake9.

In the practical operation of the machine above described we have foundthat a rigid connection between the driving and driven parts is notalways desirable, owing tothe tendency of the inertia of the drivingpart to at times drive the loom-shaft forward too quickly, and thuscause a somewhat jerking and uneven motion of the apparatus. We havetherefore devised the flexible connection illustrated in Figs. 1 to 4.In Figs. 3 and 4 we have shown the motor 4 mounted upon a stud l1,bolted to the frame 12 of the loom, the motor being free to travelaround the stud, but not being counterbalanced. A wheel 13, which isgeared to a gear-wheel 33, fixed to the loom-shaft 1, and gear-wheel 3are both rigidly mounted upon a sleeve 14;, the latter being free toturn upon the stud 11. On the opposite side of the hub 15, to which themotor is attached, are lugs 16 and 17. A thrust-rod 18 is pivoted at oneend to lug 16 and atits other end to a lever 19, pivoted in theloom-frame 20, which latter lever carries at its outer end thebrake-shoe 9, adapted to impinge against the gear-wheel 3. Theconnection between rod 18 and lever 19 is such as to permit the rod toberaised a certain distance before it raises lever 19. This may be done bycutting a slot 3-1 in the end of the rod, the slot embracing aprojection 35 on lever 19 and being of such length that when the motorhas traveled the required length, as hereinafter described, the rod willbe lifted, so that the end of the slot will strike against and raise theprojection 35. The gear-wheel 3 has on opposite sides bearing-surfaces21 and 22, and the brake-shoe 9 is made hollow, with sides to embracesaid surfaces, as illustrated in detail in Fig. 5. To lug 17 is attacheda spring 23, the latter being also attached to the lever 19. In thisinstance, when current is introduced to the motor the latter will beginto travel around stud 11, gradually extending spring 23 and tighteningthe brake and at the same time moving rod 18 vertically until the motorhas traveled without load a sufficient distance, which will have beenpreviously determined, to start the same, when the rod 18 will lift thebrake against the pressure of spring 23, and at the same time that partof the rod 18 below lug 10 will strike against the hub upon which themotor-casing is mounted and will prevent further travel by themotor-casing, thus serving to hold the motor in a stationary position.During the operation of the apparatus the connection of the parts willthus be flexible and the spring 23 will take up any uneven motion of theloom. The strength of spring 23 may be varied to suit the conditionsunder which the motor is to work.

An efficient construction and one which we prefer in practice is thatshown in Figs. 1 and 2, in which 11 is the stud mounted in frame 12 andto which the motor 4: is rigidly fixed. 3 is the gear-wheel meshing withpinion 6 on the shaft of the motor, and 13 is the wheel geared to theloom-shaft and to which the brake 9 is applied. WVheels 3 and 13 areloosely mounted upon stud 11. One or more stops 24 2 1 are formed onWheel 13, and one or more projections 25 25, adapted to engage saidstops, are formed on wheel 3. Springs 23 23 of. suitable strengthconnect Wheels 3 and 13. W'hen the brake 9 is released and the motorstart-ed, it will start without load, except the tension of the springs,and run until sufficient inertia is attained, when (the distance havingbeen previously determined) the lugs 25 will strike against the stops 2424. In this case the pullof the wheel 3 upon wheel 13 and the loom-shaftwill be through springs 23 23 and against the rigid steps 24:, andtherefore the operation of the device will not be uneven. When the brakeis applied, the tension of the springs will react to reverse the motor,and thus cause it to come to rest With- 1 load to a speed sufficient toovercome the clare that what we claim as new, and desire to secure byLetters Patent, is

1. The combination withadriving-shaft, of

a motor, means for starting the motor without load to a speed sufficientto overcome the static inertia of the driving-shaft, and means actuatedby the motor for connecting said motor with the driving-shaft, saidmeans being actuated by the motor when said speed has been attained,substantially as described.

2. The combination with a driving-shaft, of a motor, means for startingthe motor without load to a speed sufiicient to overcome the staticinertia of the driving-shaft, and means actuated by the motor forautomatically con necting said motor with the shaft, said means beingactuated by the motor when said speed has been attained, substantiallyas described.

3. The combination with adriving-shaft, of a motor, means for startingthe motor without load to a speed sufficient to overcome the staticinertia of the driving-shaft, and means actuated by the motor forelastically connecting said motor with the driving-shaft, said meansbeing actuated by the motor when said speed has been attained,substantially as described.

4. The combination with a driving-shaft, of a motor, a brake for saidshaft, an automatic connection between said motor and brake whereby whenthe brake is released the motor will start and when applied the motorwill stop, means for starting said motor without static inertia of thedriving-shaft, and means for automatically connecting said motor,aftersaid start has been made, with the drivingshaft, substantially asdescribed.

5. The combination with adriving-shaft, of a motor, two rotary devicesmounted upon the same shaft, one of said devices being geared to thedriving-shaf t and the other being geared to the motor, means forlimiting the movement of said devices with respect to each other, andmeans for holding said motor in fixed position, substantially asdescribed.

6. The combination with a driving-shaft, of a motor in fixed position,two rotary devices loosely mounted upon the same shaft, one of saiddevices being connected with said driving-shaft and the other of saiddevices being connected with the mot-or,one or more stops on one of saiddevices, and one ormore projections adapted to engage said stops, on theloosely mounted upon the same shaft, one of said devices being connectedwith said shaft and the other of said devices being connected with themotor, one or more stops on one of said devices, one or more projectionson the other of said devices adapted to engage said stops, and one ormore springs adapted to connect said devices with each other,substantially as described.

8. The combination with a driving-shaft, of a motor and itscontrolling-switch, a brake for said drivingshaft, two rotary devicesloosely mounted upon the same shaft, one of said devices being connectedwith said 100mshaft and the other of said devices being connected withthe motor, one or more stops on one of said devices, one or moreprojections on the other of said devices adapted to engage said stops,one or more springs adapted to connect said devices with each other, andconnections between said brake and said mo tor-switch whereby when thebrake is released the motor will be started, substantially as described.

9. The combination with a driving-shaft, of a motor, a wheel geared tothe motor-shaft and adapted to be rotated a determined distance by saidmotor before being brought into operative connection with saiddriving-shaft, and means for bringing said wheel into operativeconnection with said shaft, said means being made operative by the motorwhen the wheel has rotated said determined distance,

ALBERT B. HERRICK. WM. M. BROOK.

Witnesses:

WILLIAM H. H. STRYKER, GEO. R. WOODWARD.

